THE RIDDLE OF THE UNIVERSE

ERNST HAECKEL

THE RIDDLE OF THE UNIVERSE AT THE CLOSE OF THE NINETEENTH CENTURY

BY

ERNST HAECKEL (Ph.D., M.D., LL.D., Sc.D., and Professor at the University of Jena)

AUTHOR OF “THE HISTORY OF CREATION” “THE EVOLUTION OF MAN” ETC.

TRANSLATED BY

JOSEPH McCABE

HARPER & BROTHERS PUBLISHERS NEW YORK AND LONDON 1905

Copyright, 1900, by Harper & Brothers.

All rights reserved.